Journal-bearing.



799,819. PATBNTED SEPT. 19, 190-5.

0. B. YOUNG. JOURNAL BEARING.

APPLICATION IILBD 001228, 1904.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed October 28, 1904- Serial No. 230,306-

To all whom it natty concern:

Be it knownthat I, CHARLES B. YOUNG, a citizen of the United States,residing in Aurora, in the county of Kane and State of Illinois,haveinvented a new and useful Improvement in- J ournal-Bearings, of whichthe following is a specification.

My invention relates to journal-bearings for car-axles.

J ournal-bearings for car-axles as heretofore constructed have been madein various ways, either a brass back with a thin lead lining, a brassshell filled with babbitt, or a malleableiron back in combination withbrass and Babbitt metal. In all these cases either the babbitt or brassformed the cylindrical surface to wear against the cylindrical surfaceof the axle, while the bearing-surface at the ends to wear against theshoulders or collars of the axle has invariably been of brass. Theendthrust wear and friction is very con. 'derable, especially onrailroads having numerous curves, and the friction and wear of thehardmetal axle against the hard-metal ends of the journal-bearings notonly increases the draft of the train, but also materially diminishesthe life and durability of the journal-bearings and journals of theaxles. This wear due to end thrust shortens the life of a bearingconsiderably, as a bearing worn at the ends must be removed and put intoscrap.

The object of my invention is to provide a journal-bearing which, whilepractically indestructible in its main body, may have the worn partsremoved in a very simple manner.

My invention consists in the means I employ to practically accomplishthis object or result-that is to say, it consists in the novelconstruction of parts and devices and in the novel combinations of partsand devices herein shown and described.

In the accompanying drawings, forming a part of this specification,Figure l is a central longitudinal section of a journal-bearingembodying my invention. Fig. 2 is a bottom view of the journal-brassbefore the babbitt or soft metal is applied. Fig. 3 is a cross-sectionon line 3 3 of Fig. 1, showing the brass without the Babbitt metal. Fig.4 is a longitudinal section showing a modification in which the brassend segments are omitted.

In the drawings, A represents the brass, the same being preferably ofsteel or malleable iron. The steel or malleable iron or hardmetal brassA is provided with a chamber or recess a to receive the babbitt orsoft-metal I wear-plate B, said chamber or recess having side walls a toconfine the babbitt. The steel or" malleable iron or hard-metal brass Ais preferably provided with end segments D, of brass, the same havingintegral dovetail tongues d, fitting in dovetail recesses of the brassto retain the brass segments in place. The end segments D are furtherprovided with dovetail notches or recesses cl to receive the babbitt andpermanently secure the babbittbearing tothe brass. The babbitt B alsoenters the dovetail notches a in the brass A and fills the intersticesbetween the walls of said notches or recesses and the lugs cl on thebrass end pieces D. In the modification illustrated in Fig. 4, where thebrass end segments D are omitted, the dovetail recesses a in the brass Areceive the babbitt and firmly secure the babbitt wear-plate in thebrass. The babbitt or soft-metal wear-plate B has an integral end flangeor shoulder 6, which embraces and covers the brass end piece D and formsan endthrust bearing for the collar or shoulder f of the axle-journal F,and at the opposite end the babbitt or soft-metal wear-plate B has acurved or rounded shoulder or integral flange b, which embraces theother brass end segment D and forms an end-thrust babbitt wearingsurfacefor the collar or shoulder f of the axle. The cast-iron or hard-metalbrassA is provided at each end with transverse segmental shoulders orchannels a to receive the brass end segments D. Where the brass endsegments D are omitted, as in Fig. 4, the integral end-thrust bearingshoulders or flanges of the babbitt or soft-metal wear-plate fills thetransverse segmental channels 0?.

I claim In a journal-bearing for car-axles, the combination with thebrass having at the ends thereof transverse segmental channels orshoulders to receive end bearing-pieces, separate inserted endbearing-pieces fitting in said channels of the brass, and a babbitt orsoft-metal wearplate having integral end bearing flanges or shouldersembracing and covering said inserted end pieces, said brass havingdovetail recesses and said separate inserted segmental end pieces havingintegral tongues or lugs fitting in the recesses of the brass and saidseparate inserted end pieces having dovetail notches or recesses toreceive the integral lugs of the babbitt or soft-metal wear-plate,substantially as specified.

(J. B. YOUNG.

Witnesses:

H. M. MUNDAY, P. ABRAMS.

